The volume of a ball was measured at 500. 0 cm3, and its mass was measured to be 404. 2 g. What would be the most accurate calculation of density for the ball? round to the nearest ten thousandths. G/cm3.

What is the speed of an object at a given moment?

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

Match each scenario to the form of energy it represents